/* ----------------------------------------------------------------------------
 *         ATMEL Microcontroller Software Support 
 * ----------------------------------------------------------------------------
 * Copyright (c) 2008, Atmel Corporation
 *
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * - Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the disclaimer below.
 *
 * Atmel's name may not be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
 * DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
 * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
#ifndef __HAMMING_H__
#define __HAMMING_H__

/*
 *------------------------------------------------------------------------------
 *         Macro Defines
 *------------------------------------------------------------------------------
 */
/* A single bit was incorrect but has been recovered */
#define Hamming_ERROR_SINGLEBIT		1

/*  The original code has been corrupted */
#define Hamming_ERROR_ECC		2

/*  Multiple bits are incorrect in the data and they cannot be corrected */
#define Hamming_ERROR_MULTIPLEBITS	3

/*
 *------------------------------------------------------------------------------
 *         Exported functions
 *------------------------------------------------------------------------------
 */
extern void Hamming_Compute256x(const unsigned char *data,
				unsigned int size,
				unsigned char *code);

extern unsigned char Hamming_Verify256x(unsigned char *data,
					unsigned int size,
					const unsigned char *code);

#endif /* #ifndef __HAMMING_H__ */
